The maritime industry is navigating the challenge of achieving 'zero' emissions, with different fleets making fuel decisions based on sustainability and climate change. While global fleets are working towards emission standards, the U.S. domestic fleet has taken a proactive approach by embracing alternative fuels like LNG, hybrid, and electric vehicles. The sector is focusing on sustainability and understanding the gradual transition to 'zero' emissions. Despite challenges in infrastructure for full electric vessel capabilities, projects involving hybrid propulsion systems have shown success in reducing emissions and energy use. The industry debates the environmental benefits of regulations like the global Sulphur cap and the adoption of scrubbers, with concerns about environmental detriments and their impact on warming. As the maritime sector moves towards a more sustainable future, the discussion involves a range of propulsion systems, alternative fuels, and strategies to reduce emissions.